Heavy metal treatment and removal using natural zeolites from sewage sludge, compost, and agricultural soils: a review

2021 ◽  
Vol 14 (12) ◽  
Author(s):  
Antonis A. Zorpas ◽  
Jose Navarro Pedreño ◽  
María Belén Almendro Candel
Keyword(s):  
Heavy Metal ◽  
Sewage Sludge ◽  
Agricultural Soils ◽  
Natural Zeolites ◽  
Sludge Compost ◽  
Sewage Sludge Compost ◽  
Metal Treatment

scholarly journals Impact of Low-Dose Municipal Sewage Sludge Compost Treatments on the Nutrient and the Heavy Metal Contents in a Chernozem Topsoil Near Újkígyós, Hungary: A 5-Year Comparison

2020 ◽  
Vol 13 (1-2) ◽  
pp. 25-30 ◽  
Author(s):  
Zsuzsanna Ladányi ◽  
Katalin Csányi ◽  
Andrea Farsang ◽  
Katalin Perei ◽  
Attila Bodor ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Sewage Sludge ◽  
Soil Properties ◽  
Low Dose ◽  
Nutrient Content ◽  
Municipal Sewage ◽  
Municipal Sewage Sludge ◽  
Sludge Compost ◽  
Sewage Sludge Compost ◽  
Metal Contents

AbstractAgriculture is one of the major fields, where sewage sludge can be used. Its high nutrient content can contribute to the improvement of important soil properties, such as nutrient content, water balance and soil structure. However, sewage sludge may contain hazardous components, such as pathogens and pollutants. Therefore, it is important to monitor the effects of its field application. In this paper, we assessed the impacts of two low-dose (2.5 m3/ha) municipal sewage sludge compost applications (in 2013 and in 2017) in a 5.6 ha arable land in southeast Hungary (near Újkígyós), located in the Hungarian Great Plain. The nutrient and the heavy metal contents in the upper soil layer (0-30 cm) of the studied Chernozem soils were compared between two sampling campaigns in 2013 (before the compost applications) and in 2018 (after the compost applications). Basic soil properties (pH, salinity, humus content, carbonate content, Arany yarn number) complemented with nutrient content (K2O, P2O5, NO2+ NO3) and heavy metal content (Cd, Co, Cr, Cu, Ni, Pb and Zn) analyses were performed. The results show that no significant change can be noticed in the baseline parameters over the 5-year period. The slight increase in the P2O5, NO2+ NO3 content is closely related to the beneficial effects of the sewage sludge deposition. The soil-bound heavy metal load did not increase significantly as a result of the compost treatments, only nickel showed a slight increase in the topsoil. In all cases the heavy metal concentrations did not reach the contamination thresholds set by Hungarian standards. The results provided positive evidences proving that low dose municipal sewage sludge compost disposal on agricultural land is safe, and can be considered as a sustainable soil amendment for agriculture in compliance with legal requirements.

Effects of municipal solid waste- and sewage sludge-compost-based growing media on the yield and heavy metal content of four lettuce cultivars

2017 ◽  
Vol 24 (32) ◽  
pp. 25406-25415 ◽  
Author(s):  
Concetta Eliana Gattullo ◽  
Carlo Mininni ◽  
Angelo Parente ◽  
Francesco Fabiano Montesano ◽  
Ignazio Allegretta ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Sewage Sludge ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Metal Content ◽  
Heavy Metal Content ◽  
Growing Media ◽  
Sludge Compost ◽  
Sewage Sludge Compost

scholarly journals USE PF URBAN SLUDGE COMPOST AS FERTILIZANT ON APPLE ORCHARDS

2021 ◽  
Vol 37 (37) ◽  
pp. 103-114
Author(s):  
Claudia Nicola ◽  
◽  
Mihaela Paraschiv ◽  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Sewage Sludge ◽  
Apple Orchard ◽  
Growth And Yield ◽  
Municipal Sewage ◽  
Municipal Sewage Sludge ◽  
Soil Fertilization ◽  
Sludge Compost ◽  
Sewage Sludge Compost

This study shows the influence of compost fertilization derived from sludge obtained from wastewater treatment on the nutrition of an eight-year-old apple orchard, ʹJonathanʹ cv. A field experiment was conducted to demonstrate the beneficial and negative aspects of (urban) sludge compost fertilization in apples and to assess the risk of soil contamination with heavy metals from municipal sewage sludge compost. The experimental factor was the compost with the following gradations: V1 = 0 t/ha, V2 = 20 t/ha, V3 = 40 t/ha, V4 = 60 t/ha, V5 = 80 t/ha. After two years (2019-2021) from soil fertilization with compost, the nitrogen content of the leaves increased in the treatment with the maximum fertilization dose (80 t/ha) by 30% compared to the unfertilized control, while the phosphorus content of leaves increased by 80% compared to non-fertilization control. The potassium content of the leaves increased by 36% in the 80 t/ha treatment compared to the unfertilized control, but still remained at a deficit level. The results showed that growth and yield were improved by using sewage sludge compost. However, sewage sludge compost applications have not significantly altered the heavy metal content of plant tissues. The concentration of heavy metals in the soil did not exceed the maximum permissible thresholds according to standards established in other EU countries, where compost from sewage sludge is considered product, not waste. However, the calculation of the Igeo index (geoaccumulation index of heavy metal in soil) showed certain levels of soil pollution already installed with Cd Zn, Pb in all variants fertilized with compost.

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